当前位置：
X-MOL 学术
›
ACS Appl. Energy Mater.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
S, Na Co-Doped Graphitic Carbon Nitride/Reduced Graphene Oxide Hollow Mesoporous Spheres for Photoelectrochemical Catalysis Application
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2020-07-31 00:00:00 , DOI: 10.1021/acsanm.0c01444 Yanmei Zheng 1 , Yuanyuan Liu 1 , Xinli Guo 1 , Weijie Zhang 1 , YiXuan Wang 1 , Ming Zhang 1 , Rui Li 1 , Zhengbin Peng 1 , Hang Xie 1 , Ying Huang 2
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2020-07-31 00:00:00 , DOI: 10.1021/acsanm.0c01444 Yanmei Zheng 1 , Yuanyuan Liu 1 , Xinli Guo 1 , Weijie Zhang 1 , YiXuan Wang 1 , Ming Zhang 1 , Rui Li 1 , Zhengbin Peng 1 , Hang Xie 1 , Ying Huang 2
Affiliation
|
As an environmentally friendly visible-light-responsive and metal-free photocatalyst, the photoelectrochemical (PEC) performance of graphitic carbon nitride (CN) has still been limited by its large optical band gap, low absorption of light, and inefficient transfer of electron–hole carriers. Herein, we report an S, Na co-doped CN/reduced graphene oxide (rGO) (S, Na-CN/rGO) hollow mesoporous sphere (HMS) prepared by supramolecular preorganization of monomers. The as-prepared S, Na-CN/rGO HMS is uniform with a diameter of ∼2 μm and exhibits a high specific surface area up to 92.3 m2g–1, a narrow band gap of 2.26 eV, and a high PEC performance with a photocurrent density of 14.04 μA/cm2, which is 78-fold of bulk CN (0.18 μA/cm2). The significantly enhanced PEC performance is attributed to the synergistic effect of enhanced light absorption by the multiple reflections of incident light in the unique HMS structure, the changes of the electronic structure by S, Na co-doping, and the well-conduced rGO layers in CN. The results have provided a way for realizing the practical photoelectrochemical catalysis application of CN.
中文翻译：
S，Na共掺杂的石墨化氮化碳/还原氧化石墨烯空心中孔球体在光电化学催化中的应用
作为一种对环境友好的可见光响应性和不含金属的光催化剂，石墨氮化碳（CN）的光电化学（PEC）性能仍然受到其光学带隙大，光吸收低以及电子转移效率低的限制，空穴载体。在本文中，我们报道了通过单体的超分子预组织制备的S，Na共掺杂的CN /还原氧化石墨烯（rGO）（S，Na-CN / rGO）中空介孔球（HMS）。所制备的S，Na-CN / rGO HMS均匀，直径约2μm，具有高达92.3 m 2 g –1的高比表面积，2.26 eV的窄带隙和高PEC性能光电流密度为14.04μA/ cm 2，是整体CN（0.18μA/ cm 2）。PEC性能的显着提高归因于独特的HMS结构中入射光的多次反射，S，Na共掺杂引起的电子结构的变化以及导电性良好的rGO层的协同作用，从而增强了光吸收。 CN 结果为实现CN的实际光电化学催化应用提供了一种途径。
更新日期：2020-07-31
中文翻译：
S，Na共掺杂的石墨化氮化碳/还原氧化石墨烯空心中孔球体在光电化学催化中的应用
作为一种对环境友好的可见光响应性和不含金属的光催化剂，石墨氮化碳（CN）的光电化学（PEC）性能仍然受到其光学带隙大，光吸收低以及电子转移效率低的限制，空穴载体。在本文中，我们报道了通过单体的超分子预组织制备的S，Na共掺杂的CN /还原氧化石墨烯（rGO）（S，Na-CN / rGO）中空介孔球（HMS）。所制备的S，Na-CN / rGO HMS均匀，直径约2μm，具有高达92.3 m 2 g –1的高比表面积，2.26 eV的窄带隙和高PEC性能光电流密度为14.04μA/ cm 2，是整体CN（0.18μA/ cm 2）。PEC性能的显着提高归因于独特的HMS结构中入射光的多次反射，S，Na共掺杂引起的电子结构的变化以及导电性良好的rGO层的协同作用，从而增强了光吸收。 CN 结果为实现CN的实际光电化学催化应用提供了一种途径。
京公网安备 11010802027423号